she is the florida woman whose complaints to the fbi eventually led to petraeus' resignation. in a new twist to the david petraeus sex scandal, the pentagon says that the top commander in afghanistan, general john allen, is under investigation, for sending allegedly improper e-mails to jill kelly. kelly is the florida woman who triggered the investigation and ultimately forced petraeus to resign. the pentagon is reviewing between 20,000 and 30,000 documents involved. allen, meanwhile, denies any wrongdoing and remains in his current position. late monday, agents spent nearly five hours at the home of petraeus' former mistress, paula broadwell, leaving early this morning with several boxes. this, after the fbi told abc news they discovered thousands of e-mails between broadwell and petraeus, detailing the affair. >> in his universe, this moral failing is unacceptable and renders him unworthy of continuing this position of responsibility for the nation. >> reporter: the affair came to light over the summer, as part of an fbi investigation that began after jill kelly received thr